port
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... client. It should initiate a connection to the server on the
appropriate port and then send the TLS ClientHello to begin the TLS
...
... Port Number ...
... HTTP/TLS over a
separate port in order to distinguish which protocol is being used.
When HTTP/TLS ...
... HTTP/TLS is being run over a TCP/IP connection, the default port
is 443. This does not preclude HTTP/TLS ...